const useTagsViewStore = defineStore(
  'tags-view',
  {
    state: () => ({
      visitedViews: [],
      cachedViews: [],
      iframeViews: []
    }),
    actions: {
      addView(view) {
        this.addVisitedView(view)
        this.addCachedView(view)
      },
      addIframeView(view) {
        if (this.iframeViews.some(v => v.path === view.path)) return
        this.iframeViews.push(
          Object.assign({}, view, {
            title: view.meta.title || 'no-name'
          })
        )
      },
      addVisitedView(view) {
        if (this.visitedViews.some(v => v.path === view.path)) return
        this.visitedViews.push(
          Object.assign({}, view, {
            title: view.meta.title || 'no-name'
          })
        )
      },
      addCachedView(view) {
        if (this.cachedViews.includes(view.name)) return
        if (!view.meta.noCache) {
          this.cachedViews.push(view.name)
        }
      },
      delView(view) {
        return new Promise(resolve => {
          this.delVisitedView(view)
          this.delCachedView(view)
          resolve({
            visitedViews: [...this.visitedViews],
            cachedViews: [...this.cachedViews]
          })
        })
      },
      delVisitedView(view) {
        return new Promise(resolve => {
          const index = this.visitedViews.findIndex(v => v.path === view.path);
          if (index !== -1) {
            this.visitedViews.splice(index, 1);
          }
          this.iframeViews = this.iframeViews.filter(item => item.path !== view.path)
          resolve([...this.visitedViews])
        })
      },
      delIframeView(view) {
        return new Promise(resolve => {
          this.iframeViews = this.iframeViews.filter(item => item.path !== view.path)
          resolve([...this.iframeViews])
        })
      },
      delCachedView(view) {
        return new Promise(resolve => {
          const index = this.cachedViews.indexOf(view.name)
          index > -1 && this.cachedViews.splice(index, 1)
          resolve([...this.cachedViews])
        })
      },
      delOthersViews(view) {
        return new Promise(resolve => {
          this.delOthersVisitedViews(view)
          this.delOthersCachedViews(view)
          resolve({
            visitedViews: [...this.visitedViews],
            cachedViews: [...this.cachedViews]
          })
        })
      },
      delOthersVisitedViews(view) {
        return new Promise(resolve => {
          this.visitedViews = this.visitedViews.filter(v => {
            return v.meta.affix || v.path === view.path
          })
          this.iframeViews = this.iframeViews.filter(item => item.path === view.path)
          resolve([...this.visitedViews])
        })
      },
      delOthersCachedViews(view) {
        return new Promise(resolve => {
          const index = this.cachedViews.indexOf(view.name)
          if (index > -1) {
            this.cachedViews = this.cachedViews.slice(index, index + 1)
          } else {
            this.cachedViews = []
          }
          resolve([...this.cachedViews])
        })
      },
      delAllViews(view) {
        return new Promise(resolve => {
          this.delAllVisitedViews(view)
          this.delAllCachedViews(view)
          resolve({
            visitedViews: [...this.visitedViews],
            cachedViews: [...this.cachedViews]
          })
        })
      },
      delAllVisitedViews(view) {
        return new Promise(resolve => {
          this.visitedViews = this.visitedViews.filter(tag => tag.meta.affix)
          this.iframeViews = []
          resolve([...this.visitedViews])
        })
      },
      delAllCachedViews(view) {
        return new Promise(resolve => {
          this.cachedViews = []
          resolve([...this.cachedViews])
        })
      },
      updateVisitedView(view) {
        const targetView = this.visitedViews.find(v => v.path === view.path);
        if (targetView) {
          Object.assign(targetView, view);
        }
      },
      delRightTags(view) {
        return this.modifyTags(view, (index, idx) => idx <= index);
      },
      delLeftTags(view) {
        return this.modifyTags(view, (index, idx) => idx >= index);
      },
      modifyTags(view, comparisonFn) {
        return new Promise(resolve => {
          const index = this.visitedViews.findIndex(v => v.path === view.path);
          if (index === -1) {
            resolve([]);
            return;
          }
          this.visitedViews = this.visitedViews.filter((item, idx) => {
            if (comparisonFn(index, idx) || (item.meta && item.meta.affix)) {
              return true;
            }
            this.removeCachedView(item);
            return false;
          });
          resolve([...this.visitedViews]);
        });
      },
      removeCachedView(item) {
        const i = this.cachedViews.indexOf(item.name);
        if (i > -1) {
          this.cachedViews.splice(i, 1);
        }
        if (item.meta.link) {
          const fi = this.iframeViews.findIndex(v => v.path === item.path);
          if (fi !== -1) {
            this.iframeViews.splice(fi, 1);
          }
        }
      }
    }
  })

export default useTagsViewStore
